package org.llc.common.util;

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/**
 * 容器工具类
 *
 *
 * @author llc
 * @date 2019/1/23 16:52
 * @since 1.0.0
 */
@Slf4j
@Component
public class SpringUtil implements ApplicationContextAware {

    private static ApplicationContext applicationContext;

    /**
     * 通过name获取 Bean
     *
     * @param applicationContext 应用上下文
     * @author llc
     * @author llc
     * @date 2019/1/23 16:52
     */
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        if (SpringUtil.applicationContext == null) {
            SpringUtil.applicationContext = applicationContext;
        }
    }

    /**
     * 获取applicationContext
     *
     * @return org.springframework.context.ApplicationContext
     * @author llc
     * @date 2019/11/26 13:21
     */
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    /**
     * 通过name获取 Bean
     *
     * @param name bean name
     * @return java.lang.Object bean
     * @author llc
     * @date 2019/1/23 16:52
     */
    public static Object getBean(String name) {
        return getApplicationContext().getBean(name);
    }

    /**
     * 通过class获取Bean
     *
     * @param clazz class 对象
     * @return T bean
     * @author llc
     * @date 2019/1/23 16:52
     */
    public static <T> T getBean(Class<T> clazz) {
        return getApplicationContext().getBean(clazz);
    }

    /**
     * 通过name,以及Clazz返回指定的Bean
     *
     * @param name  bean name
     * @param clazz class 对象
     * @return T bean
     * @author llc
     * @date 2019/1/23 16:52
     */
    public static <T> T getBean(String name, Class<T> clazz) {
        return getApplicationContext().getBean(name, clazz);
    }

}